/* 期貨選擇權（/futures/，深色） */
.sp-fo { --bg: #131722; --card: #1c2030; --line: #2f354b; --grid: #272d42; --text: #e6e8ee; --mute: #848e9c; --sub: #b7bdc8; --acc: #4e8cff;
	color: var(--text); background: var(--bg); border-radius: 14px; padding: 20px 22px; margin-bottom: 30px;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans TC", sans-serif; }
.sp-fo * { box-sizing: border-box; }
.sp-fo-wait, .sp-fo .na { color: var(--mute); }
@media (max-width: 760px) { .sp-fo { padding: 14px 12px; border-radius: 10px; } }

.sp-fo-sum { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; margin-bottom: 16px; }
@media (max-width: 1100px) { .sp-fo-sum { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .sp-fo-sum { grid-template-columns: repeat(2, 1fr); } }
.sp-fo-card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; cursor: pointer; text-align: left; color: var(--text); font: inherit; min-width: 0; }
.sp-fo-card:hover { border-color: var(--acc); background: var(--card); color: var(--text); }
.sp-fo-card .k { color: var(--mute); font-size: 12px; line-height: 1.4; }
.sp-fo-card .v { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; margin: 2px 0; white-space: nowrap; }
.sp-fo-card .v small { font-size: 12px; font-weight: 400; color: var(--mute); margin-left: 3px; }
.sp-fo-card .s { font-size: 12px; color: var(--sub); font-variant-numeric: tabular-nums; }

.sp-fo-tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin-bottom: 12px; overflow-x: auto; scrollbar-width: none; }
.sp-fo-tabs::-webkit-scrollbar { display: none; }
.sp-fo-tabs button { background: transparent; color: #9aa3b2; border: 0; border-bottom: 2px solid transparent; border-radius: 0; box-shadow: none; padding: 7px 13px 9px; font: inherit; font-size: 15px; font-weight: 600; cursor: pointer; margin-bottom: -1px; white-space: nowrap; }
.sp-fo-tabs button.on { color: #fff; border-bottom-color: var(--acc); }
.sp-fo-tabs button:hover { color: #fff; background: transparent; }

.sp-fo-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 8px; align-items: center; }
.sp-fo-chips .lb { color: var(--mute); font-size: 12px; margin-right: 2px; }
.sp-fo-chips button { background: var(--card); color: var(--sub); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font: inherit; font-size: 13px; cursor: pointer; box-shadow: none; }
.sp-fo-chips button:hover { color: #fff; background: var(--card); border-color: var(--acc); }
.sp-fo-chips button.on, .sp-fo-chips button.on:hover { background: var(--acc); border-color: var(--acc); color: #fff; font-weight: 600; }
.sp-fo-chips.mode button.on { background: #2a3550; border-color: var(--acc); }
.sp-fo-ctl { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin: 4px 0 6px; }
.sp-fo-ctl label { color: var(--sub); font-size: 13px; display: inline-flex; align-items: center; gap: 5px; cursor: pointer; }
.sp-fo-legend { font-size: 13px; color: #c9ced8; min-height: 22px; margin-bottom: 6px; font-variant-numeric: tabular-nums; line-height: 1.6; }
.sp-fo-legend b { color: #fff; }
.sp-fo-legend .sub { color: var(--mute); font-size: 12px; }
.sp-fo-chart { height: 380px; width: 100%; }
@media (max-width: 640px) { .sp-fo-chart { height: 280px; } }
.sp-fo-note { font-size: 12.5px; color: var(--mute); margin: 10px 0 0; line-height: 1.7; }

/* 履約價分布：左買權、右賣權 */
.sp-fo-oihd { font-size: 13.5px; color: var(--sub); line-height: 1.8; margin: 2px 0 8px; font-variant-numeric: tabular-nums; }
.sp-fo-oihd b { color: #fff; }
.sp-fo-oi { font-variant-numeric: tabular-nums; font-size: 13px; }
.sp-fo-oi .r { display: grid; grid-template-columns: 64px 1fr 74px 1fr 64px; align-items: center; gap: 6px; padding: 2px 0; border-bottom: 1px solid #1d2230; }
.sp-fo-oi .r.h { color: var(--mute); font-size: 12px; border-bottom: 1px solid var(--line); padding-bottom: 5px; }
.sp-fo-oi .r.atm { background: rgba(78,140,255,.10); }
.sp-fo-oi .k { text-align: center; font-weight: 600; }
.sp-fo-oi .r.mx .k { color: #f5c542; }
.sp-fo-oi .cd, .sp-fo-oi .pd { font-size: 12px; }
.sp-fo-oi .cd { text-align: right; }
.sp-fo-oi .bc, .sp-fo-oi .bp { position: relative; height: 18px; }
.sp-fo-oi .bc i, .sp-fo-oi .bp i { position: absolute; top: 2px; bottom: 2px; border-radius: 2px; opacity: .75; }
.sp-fo-oi .bc i { right: 0; }
.sp-fo-oi .bp i { left: 0; }
.sp-fo-oi .bc span, .sp-fo-oi .bp span { position: relative; font-size: 12px; color: #fff; padding: 0 4px; line-height: 18px; }
.sp-fo-oi .bc { text-align: right; }
@media (max-width: 560px) { .sp-fo-oi .r { grid-template-columns: 1fr 62px 1fr; gap: 4px; } .sp-fo-oi .cd, .sp-fo-oi .pd { display: none; } }
.sp-fo-more { margin-top: 8px; background: transparent; border: 1px solid var(--line); color: var(--sub); border-radius: 6px; padding: 5px 12px; font: inherit; font-size: 13px; cursor: pointer; box-shadow: none; }
.sp-fo-more:hover { color: #fff; background: transparent; border-color: var(--acc); }
/* 漲跌色：用 sp-updn.css 的 --U／--D（跟著語言與使用者設定） */
.sp-fo .sp-up { color: var(--U, #f0443a); }
.sp-fo .sp-dn { color: var(--D, #16b36b); }